Abdominal exercise apparatus



FIG. 1 is a perspective view of an abdominal exercise apparatus, showing my new design, wherein the broken line showing of the pad on the base is for illustrative purposes only and forms no part of the claimed design;

FIG. 2 is a top elevational view of the embodiment of FIG. 1;

FIG. 3 is a front elevational view of the embodiment of FIG. 1;

FIG. 4 is a back elevational view of the embodiment of FIG. 1;

FIG. 5 is a right side elevational view of the embodiment of FIG. 1; and,

FIG. 6 is a left side elevational view of the embodiment of FIG. 1. 

The ornamental design for abdominal exercise apparatus, as shown and described. 